package com.tcoiss.common.log.aspect;

import com.alibaba.fastjson.JSON;
import com.tcoiss.common.component.api.model.ApiLogVo;
import com.tcoiss.common.core.domain.R;
import com.tcoiss.common.core.exception.CustomException;
import com.tcoiss.common.core.utils.StringUtils;
import com.tcoiss.common.log.service.AsyncLogService;
import com.tcoiss.common.log.annotation.ApiLog;
import com.tcoiss.common.log.enums.BusinessStatus;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;

/**
 * api日志记录处理
 *
 * @author zw
 */
@Aspect
@Component
public class ApiLogAspect
{
    private static final Logger log = LoggerFactory.getLogger(ApiLogAspect.class);

    @Autowired
    private AsyncLogService asyncLogService;

    // 配置织入点
    @Pointcut("@annotation(com.tcoiss.common.log.annotation.ApiLog)")
    public void logPointCut()
    {
    }

    /**
     * 处理完请求后执行
     *
     * @param joinPoint 切点
     */
    @AfterReturning(pointcut = "logPointCut()", returning = "jsonResult")
    public void doAfterReturning(JoinPoint joinPoint, Object jsonResult)
    {
        handleLog(joinPoint, null, jsonResult);
    }

    /**
     * 拦截异常操作
     *
     * @param joinPoint 切点
     * @param e 异常
     */
    @AfterThrowing(value = "logPointCut()", throwing = "e")
    public void doAfterThrowing(JoinPoint joinPoint, CustomException e)
    {
        handleLog(joinPoint, e, null);
    }

    protected void handleLog(final JoinPoint joinPoint, final CustomException e, Object jsonResult)
    {
        try
        {
            // 获得注解
            ApiLog controllerLog = getAnnotationLog(joinPoint);
            if (controllerLog == null)
            {
                return;
            }
            // *========api日志=========*//
            ApiLogVo apiLog = new ApiLogVo();
            apiLog.setStatus(BusinessStatus.SUCCESS.ordinal());
            // 返回参数
            //ObjectMapper objectMapper = new ObjectMapper();
            apiLog.setResponseData(StringUtils.substring(JSON.toJSONString(jsonResult), 0, 2000));
//            if(jsonResult!=null){
//                Map<String, Object> result = (Map<String, Object>) jsonResult;
//                if(result!=null){
//                    apiLog.setStatus(BusinessStatus.FAIL.ordinal());
//                    apiLog.setErrorMsg(StringUtils.substring(e.getMessage(), 0, 2000));
//                    //apiLog.setErrorMsg(objectMapper.writeValueAsString(e.getMessage()));
//                }
//            }
            apiLog.setCallUser("admin");
            if (e != null)
            {
                apiLog.setStatus(BusinessStatus.FAIL.ordinal());
                apiLog.setErrorMsg(StringUtils.substring(e.getMessage(), 0, 2000));
            }
            // 处理设置注解上的参数
            getControllerMethodDescription(joinPoint, controllerLog, apiLog);
            // 保存数据库
            asyncLogService.saveApiLog(apiLog);
        }
        catch (Exception exp)
        {
            // 记录本地异常日志
            log.error("==前置通知异常==");
            log.error("异常信息:{}", exp.getMessage());
            exp.printStackTrace();
        }
    }

    /**
     * 获取注解中对方法的描述信息 用于Controller层注解
     *
     * @param log 日志
     * @param apiLog 操作日志
     * @throws Exception
     */
    public void getControllerMethodDescription(JoinPoint joinPoint, ApiLog log, ApiLogVo apiLog) throws Exception
    {
        // 设置标题
        apiLog.setApiName(log.title());
        // 设置操作人类别
        //apiLog.setAppType(log.businessType().ordinal());
        // 是否需要保存request，参数和值
        if (log.isSaveRequestData())
        {
            // 获取参数的信息，传入到数据库中。
            setRequestValue(joinPoint, apiLog);
        }
    }

    /**
     * 获取请求的参数，放到log中
     *
     * @param apiLog 操作日志
     * @throws Exception 异常
     */
    private void setRequestValue(JoinPoint joinPoint, ApiLogVo apiLog) throws Exception
    {
        Object[] args = joinPoint.getArgs();
        apiLog.setApiCode(args[0].toString());
        String params = JSON.toJSON(args[1]).toString();
        apiLog.setRequestParam(StringUtils.substring(params, 0, 2000));
    }

    /**
     * 是否存在注解，如果存在就获取
     */
    private ApiLog getAnnotationLog(JoinPoint joinPoint) throws Exception
    {
        Signature signature = joinPoint.getSignature();
        MethodSignature methodSignature = (MethodSignature) signature;
        Method method = methodSignature.getMethod();

        if (method != null)
        {
            return method.getAnnotation(ApiLog.class);
        }
        return null;
    }

    /**
     * 判断是否需要过滤的对象。
     *
     * @param o 对象信息。
     * @return 如果是需要过滤的对象，则返回true；否则返回false。
     */
    @SuppressWarnings("rawtypes")
    public boolean isFilterObject(final Object o)
    {
        Class<?> clazz = o.getClass();
        if (clazz.isArray())
        {
            return clazz.getComponentType().isAssignableFrom(MultipartFile.class);
        }
        else if (Collection.class.isAssignableFrom(clazz))
        {
            Collection collection = (Collection) o;
            for (Iterator iter = collection.iterator(); iter.hasNext();)
            {
                return iter.next() instanceof MultipartFile;
            }
        }
        else if (Map.class.isAssignableFrom(clazz))
        {
            Map map = (Map) o;
            for (Iterator iter = map.entrySet().iterator(); iter.hasNext();)
            {
                Map.Entry entry = (Map.Entry) iter.next();
                return entry.getValue() instanceof MultipartFile;
            }
        }
        return o instanceof MultipartFile || o instanceof HttpServletRequest || o instanceof HttpServletResponse;
    }
}
